- Power on :Press the key to work, then press the key to stop working.- Charging :1) The charging capacity is 5V, and after charging, about 3 barrels of 18L bottled water can be pumped;2) There is charging low-voltage explosion-proof protection, please feel free to use;3) When the current is lower than 3.2A, the product will automatically flash red light to remind you to charge in time and stop working automatically.4) When fully charged, the green light is on, indicating that the battery is fully charged.- Usage :1) Before use, insert one end of the suction pipe into the suction port below the fuselage, and insert the other end into the bucket;2) Flashing blue light when charging, after the full light is off.